US3347169A - Rotary well pump - Google Patents
Rotary well pump Download PDFInfo
- Publication number
- US3347169A US3347169A US582170A US58217066A US3347169A US 3347169 A US3347169 A US 3347169A US 582170 A US582170 A US 582170A US 58217066 A US58217066 A US 58217066A US 3347169 A US3347169 A US 3347169A
- Authority
- US
- United States
- Prior art keywords
- stator
- rotor
- well
- cable
- tubing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 description 11
- 239000003129 oil well Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/126—Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/02—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/008—Pumps for submersible use, i.e. down-hole pumping
Definitions
- This invention relates to well pumps and is particularly directed to improvements in rotary pumps which are placed down in the well and which are driven from a prime mover located at the surface.
- the rotor in such pumps has a helical -outer surface shaped in the manner of a corkscrew and the stator has corkscrew-like helicalchannels on its inside surface, While such Moineau pumps have been used successfully at the surface for many years, their use in oil wells has given rise to difficulties on lowering the pumps and installing it in position in the well, ⁇ and in maintaining the rotorA and stator in proper relationship in operation in the well.
- Another object is to provide a telescoping drive assembly so that any changes in the length of the cable when rotating under torque load will not adversely affect the axial position of the rotor within the stator.
- FIGURE 1 is a schematic side elevation showing a well tubing extending downward into a well and showing certain mechanism at the well head.
- FIGURE 2 is a sectional side elevation showing parts at the lower end of FIGURE 1 on an enlarged scale
- FIGURE 3a is a view similar to FIGURE 2 showing the parts in operating position.
- FIGURE 3b is a continuation of the lower end of FIG- URE 3a.
- FIGURE 4 is a sectional detail taken substantially on the lines 4 4 as shown 4in FIGURE 2.
- FIGURE 5 is a transverse sectional plan View taken substantially on the lines 5--5, as shown in FIGURE 3b.
- FIGURE 6 is a side elevation partly broken away showing the extreme lower-end portion of the stator assembly.
- FIGURE 7 is a longitudinal sectional View of the telescoping drive assembly.
- FIGURE 8 is a transverse section taken substantially on lines 8--8 as shown in FIGURE 7.
- the sectional well tubing 10 extends downward into a well 11 from a well-head structure generally designated 12.
- a lateral branch pipe 13 above the well head 12 communicates with the interior of the tubing 10.
- a wire ycable 15 extends downward through the interior of the tubing string 1t), and this cable is preferably provided with both right-hand lay and left-hand lay components.
- the rotary pump ⁇ assembly generally designated 16 having a Moineau-type rotor 17 and stator 18 is connected to the lower end of the stranded cable 15 by means of the telescoping drive assembly 19.
- Cooperating parts 20 and 2.1 are provided on the lower end of the tubing string 1t) and the lower end of the stator assembly for locking the stator assembly in position.
- the pump assembly 16 and the telescoping drive assembly 19 are lowered down through the interior of the tubing string 10 on the lower end of the cable 15 until the parts 20 and 21 are interengaged and until continued downward movement of the cable 15 brings the rotor 17 into position within the stator 18.
- the stranded cable 15 is then rotated at the surface to cause the telescoping drive assembly to turn the rotor 17 within the stator 1S, and thereby raise the well fluid up through the tubing string 10 and to flow out through Ithe lateral pipe 4'13.
- FIGURE 2 shows the position of the rotor 17 and stator 18 while the parts are being lowered into position through the tubing string 10.
- the tting 25 at the lower end of the telescoping drive assembly 19 is connected by coupling 26 and shaft 27 to the upper end of the corkscrew-like rotor 17.
- Relatively loose left-hand threads 28 also connect the upper end of the rotor to the sectional tubular sleeve 29.
- the stator 18 with its corkscrew-like internal helical channels 18a is fixed within one of the sections -of this sleeve 29.
- a tubular coupling 30 connects the lower end of the sleeve 29 to the tubular locking sleeve 20.
- the position of the rotor 17 and stator 18 as shown in FIGURE 2 is such that the lower end of the rotor 17 is placed above the upper end of the stator 18 when the pump assembly is being lowered into the well tubing 10.
- the central unblocked opening through the stator 18 and through the sleeve parts 2t), 29 and 30 permits viscous fluid to flow through the interior of the stator 18 and out through the lateral window 32 in the upper end of the sleeve 29 as the pump assembly is being lowered into position. If the rotor 17 were to be in position within the stator 18 during this lowering movement, viscous well fluid would offer resistance to lowering of the pump assembly 16 into position within the tubing 10.
- the flexible cable 15 does not afford any means of applying effective downward thrust, and therefore it might take some time for the pump assembly 16 to settle through viscous fluid in the well tubing.
- the axial separation of the rotor 17 and 3 stator 18 during the lowering movement overcomes this diiiiculty.
- the projections 35 at the lower end of the locking sleeve 2t) cooperate with the shape of the curved internal plates or lugs 21 at the lower end of the tubing string so that automatic engagement is achieved.
- the plates 21 are held in position by means of threaded fastenings 36 mounted on the hollow body 37 at the lower end of the sectional tubing string 11).
- the inclined surfaces 38 on the i parts 21 and the inclined surfaces 39 on the projections 35 cause relative turning movement between the parts so that the projections 35 may pass downward through the clearance spaces between the parts 21 to reach the position shown in FIGURE 3b.
- Subsequent turning movement of the cable 15 in the direction for proper rotation of the rotor 17 serves to turn the projections 35 to the locking position shown in FIGURE 5, in which each of them engages one of the boltheads of afastening assembly 36.
- This assembly 19 includes the shell member 46 which is connected by threads 47 to the fitting 48 at the lower end of the cable 15.
- the shell member 46 includes a portion 49 having a non-circular bore 50 which may be hexagonal.
- a noncircular stem 52 of similar cross-section is slidablyv mounted within the bore 50 to transmit torque.
- An enlarged cap 53 on the stem prevents disassembly of the parts.
- the lower end of the sliding stem 52 is connected by threads 54 to the member 25. In operation, the surface 55 turns against the surface 56.
- the cable 15 When it is desired to withdraw the pump assembly 16 from the tubing string 10, the cable 15 is lifted vertically. This serves first to retract the rotor 17 from the 'interior of the stator 18 and then when the threaded parts 28 meet in end-to-end engagement, additional tension springs shoulders inward fromengagement under plates 21. The entire pump assembly may then be withdrawn from the well on the end of the cable.
- a cable supported and operated rotary pump for use when anchored within the lower end of a tubing string disposed in a well bore, said rotary pump comprising:
- latch means within the lower end of the tubing string including at least a pair of arcuate internal ribs separated by axially directed guide channels, the upper ends of said ribs forming helical cam surfaces directed into said channels, the lower ends of said ribs forming latching abutments;
- latch ngers extending from said sleeve, engageable with said cam surfaces, dimensioned to be received in said channels, and rotatable into latching engagement with said abutments;
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Description
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US582170A US3347169A (en) | 1966-09-26 | 1966-09-26 | Rotary well pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US582170A US3347169A (en) | 1966-09-26 | 1966-09-26 | Rotary well pump |
Publications (1)
Publication Number | Publication Date |
---|---|
US3347169A true US3347169A (en) | 1967-10-17 |
Family
ID=24328111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US582170A Expired - Lifetime US3347169A (en) | 1966-09-26 | 1966-09-26 | Rotary well pump |
Country Status (1)
Country | Link |
---|---|
US (1) | US3347169A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3989418A (en) * | 1973-05-18 | 1976-11-02 | Swanson Engineering Inc. | Fluid pump for use in explosive bore holes |
US4386654A (en) * | 1981-05-11 | 1983-06-07 | Becker John A | Hydraulically operated downhole oil well pump |
EP0100627A1 (en) * | 1982-07-20 | 1984-02-15 | Mono Pumps Limited | Helical gear pump |
FR2566059A1 (en) * | 1984-06-19 | 1985-12-20 | Hughes Tool Co | ADVANCED CAVITY PUMP THROUGH TUBES |
EP0297960A2 (en) * | 1987-06-30 | 1989-01-04 | Institut Français du Pétrole | Fluid-pumping apparatus in a well |
US4820135A (en) * | 1986-02-28 | 1989-04-11 | Shell Oil Company | Fluid driven pumping apparatus |
US4828036A (en) * | 1987-01-05 | 1989-05-09 | Shell Oil Company | Apparatus and method for pumping well fluids |
US5015162A (en) * | 1989-11-28 | 1991-05-14 | Heppner Terry D | Attachment for an oil well screw pump system |
EP0482912A1 (en) * | 1990-10-23 | 1992-04-29 | Halliburton Company | Downhole pump for formation testing |
US5143153A (en) * | 1991-07-31 | 1992-09-01 | Bach Ronald L | Rotary oil well pump and sucker rod lift |
US5746582A (en) * | 1996-09-23 | 1998-05-05 | Atlantic Richfield Company | Through-tubing, retrievable downhole submersible electrical pump and method of using same |
WO2003001028A1 (en) * | 2001-06-25 | 2003-01-03 | Weatherford/Lamb, Inc. | Progressive cavity wellbore pump for use in artificial lift systems |
US6729391B2 (en) | 2001-12-14 | 2004-05-04 | Kudu Industries Inc. | Insertable progressing cavity pump |
US20090078426A1 (en) * | 2007-09-26 | 2009-03-26 | National Oilwell Varco, L.P. | Insertable Progressive Cavity Pump |
US20090301705A1 (en) * | 2008-06-09 | 2009-12-10 | Smith International, Inc. | Universal Pump Holddown System |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1036824A (en) * | 1908-08-28 | 1912-08-27 | John E Gable | Well-pump. |
US1980985A (en) * | 1930-01-10 | 1934-11-20 | Deming Robert | Well pump |
US2267459A (en) * | 1939-01-09 | 1941-12-23 | Fmc Corp | Deep well pump |
US2346426A (en) * | 1941-10-30 | 1944-04-11 | Fmc Corp | Flexible rotary drive coupling |
US2379944A (en) * | 1943-08-04 | 1945-07-10 | United Shoe Machinery Corp | Drilling machine |
US2464011A (en) * | 1946-11-29 | 1949-03-08 | Fmc Corp | Helical hollow rotor pump |
US2586360A (en) * | 1947-06-06 | 1952-02-19 | Mall Tool Company | Flexible shaft coupling |
US2684639A (en) * | 1952-03-03 | 1954-07-27 | Wilson Supply Company | Well pump |
US2739650A (en) * | 1951-09-19 | 1956-03-27 | Perfect Circle Corp | Pumping apparatus |
US2898087A (en) * | 1956-05-01 | 1959-08-04 | Clark Wallace | Well drilling apparatus and method |
-
1966
- 1966-09-26 US US582170A patent/US3347169A/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1036824A (en) * | 1908-08-28 | 1912-08-27 | John E Gable | Well-pump. |
US1980985A (en) * | 1930-01-10 | 1934-11-20 | Deming Robert | Well pump |
US2267459A (en) * | 1939-01-09 | 1941-12-23 | Fmc Corp | Deep well pump |
US2346426A (en) * | 1941-10-30 | 1944-04-11 | Fmc Corp | Flexible rotary drive coupling |
US2379944A (en) * | 1943-08-04 | 1945-07-10 | United Shoe Machinery Corp | Drilling machine |
US2464011A (en) * | 1946-11-29 | 1949-03-08 | Fmc Corp | Helical hollow rotor pump |
US2586360A (en) * | 1947-06-06 | 1952-02-19 | Mall Tool Company | Flexible shaft coupling |
US2739650A (en) * | 1951-09-19 | 1956-03-27 | Perfect Circle Corp | Pumping apparatus |
US2684639A (en) * | 1952-03-03 | 1954-07-27 | Wilson Supply Company | Well pump |
US2898087A (en) * | 1956-05-01 | 1959-08-04 | Clark Wallace | Well drilling apparatus and method |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4076466A (en) * | 1973-05-18 | 1978-02-28 | Swanson Engineering, Inc. | Fluid pump for use in explosive bore holes |
US3989418A (en) * | 1973-05-18 | 1976-11-02 | Swanson Engineering Inc. | Fluid pump for use in explosive bore holes |
US4386654A (en) * | 1981-05-11 | 1983-06-07 | Becker John A | Hydraulically operated downhole oil well pump |
EP0100627A1 (en) * | 1982-07-20 | 1984-02-15 | Mono Pumps Limited | Helical gear pump |
FR2566059A1 (en) * | 1984-06-19 | 1985-12-20 | Hughes Tool Co | ADVANCED CAVITY PUMP THROUGH TUBES |
US4592427A (en) * | 1984-06-19 | 1986-06-03 | Hughes Tool Company | Through tubing progressing cavity pump |
US4820135A (en) * | 1986-02-28 | 1989-04-11 | Shell Oil Company | Fluid driven pumping apparatus |
US4828036A (en) * | 1987-01-05 | 1989-05-09 | Shell Oil Company | Apparatus and method for pumping well fluids |
EP0297960A3 (en) * | 1987-06-30 | 1989-09-27 | Institut Français du Pétrole | Fluid-pumping apparatus in a well |
FR2617534A1 (en) * | 1987-06-30 | 1989-01-06 | Inst Francais Du Petrole | DEVICE FOR PUMPING A FLUID INTO THE BOTTOM OF A WELL |
EP0297960A2 (en) * | 1987-06-30 | 1989-01-04 | Institut Français du Pétrole | Fluid-pumping apparatus in a well |
US4957161A (en) * | 1987-06-30 | 1990-09-18 | Institut Francais Du Petrole | Device for pumping a fluid at the bottom of a well |
US5015162A (en) * | 1989-11-28 | 1991-05-14 | Heppner Terry D | Attachment for an oil well screw pump system |
EP0482912A1 (en) * | 1990-10-23 | 1992-04-29 | Halliburton Company | Downhole pump for formation testing |
US5143153A (en) * | 1991-07-31 | 1992-09-01 | Bach Ronald L | Rotary oil well pump and sucker rod lift |
US5746582A (en) * | 1996-09-23 | 1998-05-05 | Atlantic Richfield Company | Through-tubing, retrievable downhole submersible electrical pump and method of using same |
WO2003001028A1 (en) * | 2001-06-25 | 2003-01-03 | Weatherford/Lamb, Inc. | Progressive cavity wellbore pump for use in artificial lift systems |
US6675902B2 (en) | 2001-06-25 | 2004-01-13 | Weatherford/Lamb, Inc. | Progressive cavity wellbore pump and method of use in artificial lift systems |
US6729391B2 (en) | 2001-12-14 | 2004-05-04 | Kudu Industries Inc. | Insertable progressing cavity pump |
US20090078426A1 (en) * | 2007-09-26 | 2009-03-26 | National Oilwell Varco, L.P. | Insertable Progressive Cavity Pump |
US7874368B2 (en) * | 2007-09-26 | 2011-01-25 | National Oilwell Varco, L.P. | Insertable progressive cavity pump systems and methods of pumping a fluid with same |
US20090301705A1 (en) * | 2008-06-09 | 2009-12-10 | Smith International, Inc. | Universal Pump Holddown System |
US8191640B2 (en) | 2008-06-09 | 2012-06-05 | Smith International, Inc. | Universal pump holddown system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DELAWARE CAPITAL FORMATION, INC., 1100 NORTH MARKE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SARGENT INDUSTRIES, INC.;REEL/FRAME:004500/0355 Effective date: 19851231 |
|
AS | Assignment |
Owner name: EVI-HIGHLAND PUMP COMPANY, TEXAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:LUFKIN INDUSTRIES, INC.;REEL/FRAME:005249/0226 Effective date: 19891222 |
|
AS | Assignment |
Owner name: CITICORP NORTH AMERICA, INC., NEW YORK Free format text: SECURITY INTEREST;ASSIGNOR:EVI-HIGHLAND PUMP COMPANY;REEL/FRAME:005775/0330 Effective date: 19910329 |
|
AS | Assignment |
Owner name: EVI-HIGHLAND PUMP COMPANY Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:TRANSAMERICA BUSINESS CREDIT CORPORATION;REEL/FRAME:006164/0594 Effective date: 19920324 |